We don't want to blame the victim. The civil rights movement had a profound effect on the United States and on the American mind, maybe unique in the world. Once we realized how victimized people of color had been, an honest empathy went out and that's how we got civil rights legislation.
As a coping mechanism, or as a way to make a little hard count by shilling demons in the shadows, I try not to belittle the thought process of the conspiracy theorists. As a cocktail waitress in Vegas once schooled me: never get down on anybody else's hustle.